The Big Agnes Copper Spur UL3 XL Footprint is a lightweight, durable groundsheet designed to protect your tent floor from rocks, dirt, moisture, and abrasive terrain, helping extend its lifespan during backcountry trips. Made from tough 30D nylon ripstop with a waterproof coating, it provides reliable protection while remaining compact and easy to carry. It also enables the Fast Fly setup, allowing you to pitch a minimalist shelter using only the footprint, rainfly, poles, and stakes for reduced pack weight. Designed for seamless integration with TipLok™ Tent Buckles, this footprint is easy to attach and weighs around 9 ounces, making it an essential, packable addition for added durability in the field.